Gupta C B. (1957). Introduction to statistical methods. Vikas publishsing house.
Dyfyniad Arddull ChicagoGupta C B. Introduction to Statistical Methods. New Delhi: Vikas publishsing house, 1957.
Dyfyniad MLAGupta C B. Introduction to Statistical Methods. Vikas publishsing house, 1957.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.